Plans to build a multi-million-pound biomass plant and eco-park that would create around 500 jobs on Anglesey have taken a significant step forward following the official purchase of the site.

Orthios has announced that the handover of the former Anglesey Aluminium site in Holyhead has now been completed, paving the way for work to start on the development that will see over 500 permanent and 1,200 construction jobs brought to the island by 2018.

The former smelting works has been mothballed since its closure in September 2009, which was a significant economic blow to the island with the loss of 400 well-paid jobs.

But Orthios Eco Parks, which already has outline planning permission, will now forge ahead with the plans for a 299MWe biomass-fuelled energy centre and will develop the Eco Park for the production of sustainable fish and vegetables on adjacent land.

Many of the large industrial structures that were part of the aluminium smelting process at the site, including the iconic towering chimney, are set to be removed.

In October, a £2bn deal was signed with Chinese group SinoFortune to fund the plans, as well as similar proposals earmarked for another site in Port Talbot.

Lewis LeVasseur, chief operations officer of Orthios, said: “The Eco Park is a Combined Food and Power solution where residual heat from the power process enhances the growth of valuable fish and vegetables.

“It's a design lead solution more akin to a science park than an industrial complex. The impact for the island’s population is the diverse range of skill sets, and we envisage conservatively requiring 550 full time permanent staff.”

Orthios has already employed 20 full time staff, most of whom used to work at Anglesey Aluminium, as well as a 17-year-old engineering apprentice and a young masters graduate.

"This is an exciting and innovative project which has the potential to provide a significant boost to the local economy.

“The supply chain opportunities will also be there for local businesses, and we look forward to a continued partnership with the Orthios group to ensure these opportunities are maximised.”

A formal event will be held at the site later today to mark the official start of the project.

Albert Owen MP said: “I have worked with Orthios, the previous site owners and Government at all levels to get to this stage, and will continue to help facilitate between the company and local community.

“The company intends to liaise with businesses, training providers and schools in the area –the benefits of which will be seen in the local and regional economy as well as providing career opportunities.”